Crushing machine



Feb. 8, 1938.

I o. c. GRUENDER CRUSHING MACHINE Filed Sept. 25, 1933 2 Shets-Sheet 1 @MMW w w w mm C w Aw Feb. s, 1938. c E D 2,107,786

GRUSHING MACHINE Filed Sept. 25, 1953 2 Sheets-Sheet 2 I 71 z/ezzzw" Oscar Graze/265w" i the space above the area of screwthreaded contact with the members A and B It is provided with apertures B? through whichpass'headed Patented Feb. 8, 1938 a UNITED STATES PATENT OFFICE I CRUSHING MACHINE 0scar C. Gruender, Milwaukee, Wis., assignor to Nordberg Manufacturing 00., Milwaukee, Wis., a corporation of Wisconsin Application. September 25,1933, Serial No. 690,790

g c 4 Claims. My invention relates to an'improvement in crushing equipment and has for one purpose the provisionfof improvedmeans for holding supporting and adjusting the bowl liner of a gyratory crusher. Another object is the provision of improved means for protecting the bowl support- I ing and linersupporting means from dust. Other objects will appear from time to time in the course-of the specifications and claims.

'I illustrate my invention more or less dia grammatically in the accompanying drawings, wherein-- l s Figure 1 is an axial vertical section;' Fig. 2 is a plan view of the bowl structure;

Fig. 3 is a section on the line'3-3 of Figure 2; and

I. Fig. 4 is a section on the line 4'4 of Figure 1. Like parts are indicated by like symbols throughout.

1 Referring to the drawings, A generally indi- 1 catesa fixed circumferential main framewhich lo I may be supported upon any suitable base. It is provided with a circumferential outwardly projecting upper flange A upon which is tiltably 1 mounted the ring A the flange and ring being formedtointerpenetrateas shown in Figure 1. A are springs tending'normally to hold the ring V hired in relation to the flange'by means of a spring abutmentA {and the members A which v maintain the 's-prings under'pressure- 1B "generallyindicates the bowl structure. It includes an upwardly and inwardly inclined wall B an upwardly and outwardly inclined wall may; be employed for imparting rotation to the B and a generally cylindrical outer wall B hereinshown as screwthreaded as at B to mesh with the screwthreaded ring A Any suitable means ."member B in relation tothe ring A whereby its 5 vertical adjustment is obtained It will be understood that; such, adjusting means, however,

- are not of themselves part of the presentinvention; and will not be described in great detail. 'Q' B 'is any suitable housing member herein shown Q85 restingvupon the top of thering A and extending upwardly and inwardly as at and" housin screwfor bolts B whereby the bowl may be defined by the walls'B B and B a plurality 'of aperturesB .0 indicates a bowl liner for the bowl B which liner is provided with hook shaped flanges' C adapted topenetrate through theapertures 131 to prevent rotation of the nuts C It will be observed that the apertures B and the cover plates B overlie the U-bolts C and the attaching means therefor, thus providing means of ready access thereto. The rib C on the lock washer extends up close to thecover plate B which serves to hold the lock washer in place.

D indicates the bearing sleeve preferably formed integral with the frame A and connected thereto ,in any suitable manner by ribs or. the like. It

is provided with an upward enlargement D Rotatable within the cylindrical bore of the sleeve D is a sleeve D provided with an eccentric tapered bore D It carries at the top the drive gear D which rotates within the space D The gear D is in mesh with the pinion D on the drive shaft D D" is a cover plate carrying the spheri cal bearing member D V E indicates a crusher shaft intermediate the aperture D Associated therewith is the crusher head E which is provided with a spherical bearing surface El adapted to conform to and rest upon the spherical bearing member D Any suitable means may be employed for preventing the access of dust to the opposed'spherical bearing surfaces. I illustrate for example the spherical surfaced outer members E E formed concentric with the mafn surface E and an opposed wiping means therefor, E upwardly thrust thereagainst as by the springs E Mounted upon the upwardly tapered surface of the head E is the crushing mantleG. Opposed tothe upper edge thereof is the locking ring or nut G G generally indicates a securing member secured as by the screws G to the top of the head E It is outwardlyscrewthreaded as at G to mesh with the nut G It will be understood that in response to movement or crawl of the mantle G, which may be of manganese steel orthe like, the nut G tends to tighten itself upon the securing member G thereby main-' 'taining a downward pressure against the upper edge of the mantle G which automatically efi'ects its firm seating upon the head. G indicates a cover plate secured to the ring G as by the screws G It overlies also the heads of the screws G3 and serves as'a species of generally horizontal feed plate for the top ofthe-head. It also has a central upward extension or sleeve VG which surrounds a corresponding upward extension of the member G in relation to which it may freely rotate when the nut G rotates in relation to the member G I may employ, however, a wiping connection G to prevent the access of dust.

Secured to the top of the member G2 is a feed assembly having a central portion generally indicated as H. It may be held in position for example by the headed screw H Outwardly projecting therefrom are the ribs H upon which any suitable inwardly tapered hopper structure I-l may be mounted with removable wear taking plates H The proportion and location of the parts is such that any material delivered to the hopper H will be directed thereby to the top of the member (i whence it will find its way into the crushing cavity defined by the opposed liner C and head mantle G. H indicates a feed receiving plate having a central portion H removably secured as by the screw H to the member H.

It will be understood that rotation of the shaft D rotates the concentrically apertured sleeve D and thereby imparts gyration to the shaft E and the head E The effect of the spherical support for the head is to impart to it a movement as if it were being gyrated about a fixed center somewhat above the top of the head, the center about which the spherical bearing surface E is described. This gyration effects the crushing movement of the head. Feed may be delivered to the top of the plate portions 1-1 1-1 by any suitable means, for example, through the spout J. It escapes over the edge of the plate H drops into the hopper H thence drops to the member G and flows over the edge of the. head. into the crushing cavity between the bowl liner C and the mantle G where it is crushed, escaping down.- wardly by gravity through the crushing zone.

In removing or adjusting the bowl liner C the operator removes the cover plates B He can then lift off the lock washers or looking members C of which there is one for each pair of nuts C With these lock washers or members removed the nuts can be released and the U-bolt assembly 1 can then be lifted from the hook shaped lugsC It is advantageous to' have the securing means entirely housed within the bowl assembly, protected from dust and grit. The shield 13 closes whatever apertures there may be in the top or the bowl assembly B and protects the screw threaded connection between the bowl and the ring A 13 is any suitable dust-proof closure to protect the lower side of the screwthreaded engagement of the opposed parts. It will be realized that whereas I have described and shown a practical and operative device, nevertheless, many changes might be made in the size, shape, number and disposition of par-ts without departing from the spirit of my invention. I therefore wish my description and drawings to be taken as in abroad sense illustrative and diagrammatic rather than as limiting me to my specific showing. I claim:

1. In a gyratory crusher which includes a crushing head and means for gyrating it, a main downwardly and inwardly from the upper portion of the cylindrical wall, the two conic walls being joined to each other at their opposed edges,

and a bowl liner secured to the lower conic wall,

said bowl liner having securing lugs extending from the face thereof opposite the crushing face,

and penetrating the interior of the support, the support being provided with apertures aligned therewith, and securing means for said lugs positioned within the hollow of said support, including bolts extending upwardly from said lugs in the direction of the upper conic wall, said upper conic wall being apertured to align with said bolts, readily removable cover plates for said apertures, and lock nut means for said'bolts, said plates whenin position, cooperating with. the lock nut means to prevent displacement of said lock nut means. i

2. In securing means for securing two members together, a lug on one of said members, the other member being apertured to permit the passage of the lug therethrough, a housing associated with the apertured member, said housing having an access opening, rotatable securing means for said lug, positioned within said housing and aligned with said opening, a cover member for said opening and means for securing it in place, and means cooperating with said cover member, when in place, to prevent rotation of said rotatable securing means.

3. In securing means for securing two members together, a lug on one of said members, the other member being apertured to permit the passage of the lug therethrough, a housing associated with the apertured member, said housing having an access opening, rotatable securing means for said lug, positioned within said housing and aligned with said opening, a cover member for said opening and means for securing it in place, and a locking member cooperating with the rotatable securing means to prevent rotation thereof, said locking member being provided with faces adapted to engage the inner portion of said cover when said cover is in position.

i. In a gyratory crusher which includes a crushing head and means for gyrating it, a main frame, a hollow bowl liner support positioned on the main frame, said support including an outer and generally cylindrical wall, an inner and lower conic wall extending upwardly and inwardly from the lower edge of the outer cylindrical wall, and an upper conic wall extending downwardly and inwardly from the upper portion of the cylindrical wall, the two conic walls joining each other at their opposed inner edges, and a bowl liner secured to the lower conic wall, said liner including hook-shaped lugs extending from the face thereof opposite to its crushing face, the lower face of the support being provided, with apertures through which said hook-shaped lugs penetrate, andvsecuring means for said lugs positioned within the interior of said support, including U-shaped bolts adapted each to engage one of said hook-shaped lugs, nuts on the arms of said bolts, unitary meansjalined with apertures in the upper conic wall for simultaneously preventing the undesired rotation of the nuts of the two'arms of the individual U-shaped bolts, and covers for such apertures in the upper .wall, engaging said unitary means and holding them in operative position. Y I

I OSCAR C. GRUENDER. 

